SKU: 89594224603

Dual Pro RS4 4 Bank Battery Charger w/3 Bank B.O.S. [RS4/BOS12V3]

Sale price$207.45 Regular price$230.50
Save 10%

Pay in installments of $57.62 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 29 - Sep 3

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Dual Pro RS4 4 Bank Battery Charger w/3 Bank B.O.S. [RS4/BOS12V3]RS4 4 Bank Battery Charger with 3 Bank B. O. S. This kit includes Dual Pros B. O. S. Battery Optimization System 12V 3 Bank (PN: BOS12V3) and Dual Pros RealPRO Series Battery Charger 24A 4 Bank (PN: RS4). B. O. S. (Battery Optimization System) 12V 3 Bank B. O. S. actively shuttles energy between batteries to keep the pack balanced, increasing battery strength and longevity. Batteries in a pack will become out of balance and the pack is only as good as

RS4 4 Bank Battery Charger with 3 Bank B.O.S.

This kit includes Dual Pro’s B.O.S. Battery Optimization System - 12V - 3-Bank (PN: BOS12V3) and Dual Pro’s RealPRO Series Battery Charger - 24A - 4-Bank (PN: RS4).

B.O.S. (Battery Optimization System) - 12V - 3-Bank

B.O.S. actively shuttles energy between batteries to keep “the pack” balanced, increasing battery strength and longevity.

Batteries in a pack will become “out of balance” and the pack is only as good as its “weakest link”. In watercraft applications, this is further compounded when the trolling motor battery is used for peripherals and/or to assist the cranking battery.

B.O.S. actively shuttles energy as needed between batteries wired in series to ensure equal voltage before, during, and after charging.

B.O.S. keeps packs balanced, enabling maximum performance, and quadruple run time on the water.

Premature battery failure due to an unbalanced pack has been, unfortunately, accepted as the ‘norm’ for decades. The B.O.S. answers this call with a BSAP-24 algorithm that can accurately predict and select the battery that needs additional energy to match the other batteries within the pack. This simultaneously and successfully extends the life of each battery in the pack, as well as increasing run times.

Features:

  • Available in 6V, 8V, and 12V configuration
  • Up to six batteries in a series
  • Battery Selection and Prediction (BSAP-24) algorithm
  • Less than 1mA sleep mode
  • Transfer rate up to 7.5A
  • Self-powered
  • Any type of battery chemistry

Used in Any Application Where Batteries Are in Series:

  • Marine
  • Golf
  • Industrial
  • Aerial Equipment
  • Solar Power
  • Electrical Vehicles
  • Communications
  • Defense/Military

RealPRO Series Battery Charger - 24A - 4-Bank

RealPro Series battery chargers (formerly Recreation Series) are an affordable, reliable, and safe battery charging system designed for everyday use. The system is engineered for users who need a charging system on an occasional basis and may not want or need the capabilities of a heavier-duty and higher-amperage product.

It is designed for use in many types of applications, including bass boats, runabouts, pontoon boats, other watercraft, automobiles, ATVs, golf carts, and other similar uses. The system delivers sophisticated capabilities and superior value to customers.

Battery Charging Systems Designed for Everyday Applications:

  • Affordable, reliable, and safe
  • Unmatched performance, reliability, safety, and quality
  • TROUBLE FREE – Just Plug It In and Forget It!
  • Join Over 750,000 satisfied customers!
  • Wide variety of applications
  • Universal input (100-240 VAC 50/60HZ)

Features:

  • 4 bank battery charger 
  • Approved for wet cell and absorbed glass mat (AGM) batteries
  • Designed for use in fresh and saltwater
  • Dependable, rugged construction, and waterproof
  • Independent outputs and fully automatic
  • Battery maintenance mode
  • Two-year warranty
  • DC charge cables = 5ft and AC power cord = 3ft
  • Approved and meets ISO 8846 marine standards
  • LED lights indicate "Each Battery’s" state of charge
  • Reverse polarity protection and no installation restrictions
  • Ignition protected (US Coast Guard 33 CFR 183.410)
  • FCC 15 Parts A and B Interference Compliant

May Be Used in Many Types of Sporting applications, Including:

  • Bass Boats
  • Runabouts
  • Pontoons
  • Automobiles
  • ATVs
  • Golf Carts

Specifications:

  • Charging Banks: 4
  • Portable: No
  • Box Dimensions: 3"H x 6"W x 9"L WT: 11.65 lbs

Quick Guide (pdf)
Brochure (pdf)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 89594224603

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.6 ★★★★★
Based on 13 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
C
Cheryl Belle
Battle Creek, US
★★★★★ 3
Thin, summer weight throw, quality could be better
Color: Southern Blues, Size: Throw (50 in x 60 in), Color: Southern Blues, Size: Throw (50 in x 60 in)
This is a very light weight blanket and the "fleece" is no where to be seen. The blanket looks like cotton but has a very synthetic feel to it. Three layers implies some weight but it is thin. The construction is sloppy, see images, where the stitching looks slap dash to the point where it cannot be reversed. I liked the color, the blue is a little on the aqua side but it is a very nice calming hue. The stitching is quilt like and nicely done. I noticed other reviews felt like it was a medium weight but the only time I would use this would be to use as a cover if the AC went out. To me, the blanket is decorative and not particularly useful.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
H
Hayden
Los Angeles, US
★★★★★ 4
Average quality lightweight throw, not sold on the color
Color: Southern Blues, Size: Throw (50 in x 60 in), Color: Southern Blues, Size: Throw (50 in x 60 in)
This blanket is fairly soft and lightweight, and better suited for the summer months. I don't think the texture and "Southern Blues" color looks as nice in person as in the photos; less cozy and more like a spare blanket you might find in a hotel closet. Interestingly the care tag says that the outer faces are cotton, but the blanket feels polyester and the content tag indicates the same. The stitching and durability feel ok, and it will probably hold up for the occasional machine washing and low heat drying. Overall it's a fine warm season throw but not particularly notable. I would probably recommend one of the darker colors.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
C
circusdaze
Grantham, US
★★★★★ 5
So easy to wash!
Color: Southern Blues, Size: Full/Queen (90 in x 90 in), Color: Southern Blues, Size: Full/Queen (90 in x 90 in)
Two things I love about this coverlet: 1. It's so much easier to wash than a duvet! Or even a duvet cover or a regular blanket, for that matter. The queen-size coverlet fit easily in my washer, and I could have put in another if I had had one. It stayed loose and balanced in the machine - the washer didn't have to readjust its balance during the spin cycles. In the dryer, it didn't wad up into a ball that had to be shaken out every few minutes. It came out feeling softer and looking good, with no wrinkles. 2. It's thinner than a duvet and suitable for warm weather, yet those three stitched layers give it substance and weight that I find more comfortable than sleeping under a pile of fluff or a bed sheet. The soft pastel green color with cream lining (not really reversible due to the hem) is fresh and reminiscent of the 1950s coverlets that my grandmother made. Crocheting was one of her passions, and she'd create huge lacy doilies that lay across the foot of the coverlet. Very pretty look.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026
C
Chimi
Lexington, US
★★★★★ 5
Great summer blanket.
Color: Black, Size: Full/Queen (90 in x 90 in)
I purchased this Berkshire 3-layer fleece blanket, and it has quickly become my go-to for my queen size bed. It fits perfectly with plenty of overhang, making it look great as a top layer or a middle layer.What I love most is the breathability. While the material is technically fleece, the 3-layer design provides a nice "cotton-like" feel that doesn't feel heavy or stifling. I tend to sleep hot, and this blanket does a fantastic job of keeping me cool and comfortable through the night while still providing just enough cozy warmth.At this price point, the value is good. It feels much higher quality than other thermal blankets I’ve tried, and it holds up well in the wash without pilling or losing its softness. If you're looking for a versatile, lightweight blanket that works year-round, this is a solid choice. Highly recommended!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
S
Verified Purchase
Shlhbsn
Natrona Heights, US
★★★★★ 5
Soft, Warm, lightweight, Cozy
Color: Cream, Size: Full/Queen
When I first received this blanket I washed it by itself in cold water with detergent. I did not use a fabric softener or a fabric sheet. I air dried it completely and then put it in my dryer on air fluff for 10 minutes. No shedding and it came out just like I received it. I was concerned about shedding with some of the reviews but I had no issues with that whatsoever. It's warm yet lightweight. I didn't want anything that would make me overly hot because I'm always hot anyway. It takes that cool edge off when you still want your overhead fan on. My daughter said she likes it better than the one she has. I can't remember the brand. I feel it has a good quality. Just make note to wash it as instructed and it'll hold up well and look just as nice as the way you bought it. I'm not sure how the other reviewers that didn't leave 5 stars washed there's, but it couldn't have been the correct way.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 20, 2025

recommand products